/**
 * Copyright 2010 Jake Jackson
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jake.nb.ext.ant.hints;

import javax.swing.text.Document;
import org.jake.nb.ext.ant.parser.DocumentUtilities;
import org.jake.nb.ext.ant.parser.Spans;

/**
 * A container class transporting spans to avoid re-parsing by every hint class.
 * @author JakeJ
 */
public class SpanContainer {
  private final Document document;

  private Spans dependSpans;
  private Spans targetSpans;
  private Spans antcallSpans;

  protected SpanContainer(final Document document) {
    this.document = document;
  }

  public Document getDocument() {
    return document;
  }

  public Spans getDependSpans() {
    if(dependSpans == null) {
      dependSpans = DocumentUtilities.getDependSpans(document);
    }
    return dependSpans;
  }

  public Spans getTargetSpans() {
    if(targetSpans == null) {
      targetSpans = DocumentUtilities.getTargetSpans(document);
    }
    return targetSpans;
  }

  public Spans getAntallSpans() {
    if(antcallSpans == null) {
      antcallSpans = DocumentUtilities.getAntcallSpans(document);
    }
    return antcallSpans;
  }

}
